Trainer · Translator · SOS beacon
MorseBlink turns your iPhone into a Morse code trainer and emergency signalling device. Practice with an interactive quiz, translate any message instantly, and fire a one-tap SOS by screen flash, audio tone, or vibration. Fully offline. Zero tracking. No subscription.
One-time $4.99 · no ads · no accounts
Morse code looks intimidating from a chart, and most people who try to memorize it give up within a week. Meanwhile, the moment you actually need to signal — a night hike gone long, a dead phone network, a boat past radio range — is exactly the moment you can't look anything up. Flashlight apps blink, but they don't teach. Flashcard apps teach, but they can't transmit.
MorseBlink is both halves in one app: a gamified trainer that builds real recognition through quiz play and instant feedback, and a working transmitter that sends any message — or a repeating SOS — through screen flash, audio tone, and vibration with proper international timing. Because it's fully offline, it works in precisely the places you'd need it.
Everything in the box
An interactive quiz teaches letters A–Z and numbers 0–9 with instant feedback, accuracy and streak tracking, and progressive difficulty. Choose visual screen flash, audio tones, or haptic vibration, dial speed from 5 to 35 WPM, and use Farnsworth spacing to learn character patterns at full speed with longer pauses between them.
Type any message and transmit it instantly, or convert text to Morse code on the spot. Three output modes — screen flash, audio tone, vibration — with timing that follows international Morse standards. Handy at camp, on a trail, or whenever you want to send a real signal.
A single tap transmits ··· −−− ··· and repeats it automatically for distress signalling. It can drive all output modes at once, and the bright screen flash is visible at night. No internet needed — the SOS works fully offline, always one tap away.
A full A–Z, 0–9 reference chart with symbols lives inside the app, wrapped in a clean, minimal interface that's dark-mode optimized for night use and battery efficient during transmission. Audio tone frequency is adjustable to suit your ear.
Emergency preparedness
In critical situations when voice communication fails, Morse code can still get through. MorseBlink's SOS button turns your phone's bright screen into a repeating distress flash visible at night — with audio tone and vibration available simultaneously. Because everything runs offline, it keeps working where networks don't: backcountry trails, open water, power outages.
It's a practical addition to any kit for hikers, campers, boaters, and preppers — a signalling tool that lives on a device you already carry everywhere.
Who it's for
Train receiving skills with proper dit/dah timing and spacing per the international standard. Start at 5 WPM, use Farnsworth spacing to internalize character rhythm, and climb toward 35 WPM as your copy speed grows — useful practice on the way to amateur radio proficiency.
The gamified quiz makes memorizing A–Z and 0–9 feel like play: instant feedback, streaks, and progressive difficulty. A complete reference chart with symbols is always one tap away for troop activities, classroom units on communication history, or personal challenge.
An offline translator and one-tap SOS you can rely on beyond coverage. Type a message and flash it across a valley or a bay; if things go wrong, the repeating SOS flash is visible at night and never needs a signal bar.
Straight answers
Yes. MorseBlink is fully offline. Learning, translating, and SOS signalling all run entirely on your device — no connection is ever needed, which is exactly what you want on a trail, at sea, or anywhere coverage drops out.
No. MorseBlink is a one-time $4.99 purchase. There are no ads, no subscriptions, and no accounts to create.
Three output modes: a bright screen flash visible at night, an audio tone with adjustable frequency, and haptic vibration. The SOS feature can use all output modes simultaneously, and timing follows international Morse standards.
Yes. The interactive quiz teaches letters A–Z and numbers 0–9 with instant feedback, accuracy and streak tracking, and progressive difficulty. Speed adjusts from 5 to 35 WPM, and Farnsworth spacing keeps character patterns at full speed while stretching the gaps between them — the proven way to learn.
No. MorseBlink collects zero data — no analytics, no tracking, and no third-party SDKs. Everything stays on your device.
MorseBlink supports all iPhone and iPad models running iOS 15.1 or later. It is dark-mode optimized for night use and battery efficient during transmission.
Yes. MorseBlink follows proper international Morse timing for dits, dahs, and spacing, with adjustable speed from a beginner-friendly 5 WPM up to 35 WPM — a practical trainer for amateur radio operators and CW enthusiasts building real copy speed.
Field notes
Evergreen, practical reading — whether or not you ever install the app.
Why sound beats charts, what order to learn characters in, and how long it really takes.
The exact ··· −−− ··· pattern, its history, and how to send it with light or sound.
The training method that lets beginners hear characters at full speed without drowning.
The complete A–Z and 0–9 code, its logic, and honest advice on memorizing it.
Learn it for fun, keep it for emergencies, or train it for ham radio — MorseBlink is a complete Morse companion for $4.99, once.
Download on theApp Store